package com.peng.community.controller;

import com.peng.community.entity.DiscussPost;
import com.peng.community.entity.Page;
import com.peng.community.entity.User;
import com.peng.community.service.DiscussPostService;
import com.peng.community.service.LikeService;
import com.peng.community.service.UserService;
import com.peng.community.util.CommunityConstant;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Controller
public class HomeController implements CommunityConstant {

    @Autowired
    private DiscussPostService discussPostService;

    @Autowired
    private UserService userService;

    @Autowired
    private LikeService likeService;

    @GetMapping("/index")
    public String getIndexPage(Model model, Page page,@RequestParam(name = "orderMode",defaultValue = "0") int orderMode){
        //方法调用之前，springmvc会自动实例化model和page,并将page注入Model
        //所以，在thymeleaf中可以直接访问page对象中的数据
        page.setRows(discussPostService.findDiscussPostsRows(0));
        page.setPath("/index?orderMode="+orderMode);

        List<DiscussPost> list = discussPostService.findDiscussosts(0, page.getOffset(), page.getLimit(),orderMode);
        List<Map<String,Object>> discussPosts = new ArrayList<>();
        if (list !=null) {
            for (DiscussPost post : list) {
                Map<String,Object> map = new HashMap<>();
                map.put("post",post);
                User user = userService.findUserById(post.getUserId());
                map.put("user",user);

                long likeCount = likeService.findEntityLikeCount(ENTITY_TYPE_POST,post.getId());
                map.put("likeCount",likeCount);

                discussPosts.add(map);
            }
        }
        model.addAttribute("discussPosts",discussPosts);
        model.addAttribute("orderMode",orderMode);
        return "/index";
    }

    @GetMapping("/error")
    public String getErrorPage(){
        return "/error/500";
    }

    @GetMapping("/denied")
    public String getDeniedPage(){
        return "/error/404";
    }

}
